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A detailed analysis found La Niña began in December 2024 with a weak La Niña favored during the rest of this winter. La Niña is the cool phase of ENSO (El Niño-Southern Oscillation) that is ...
The weak La Niña is forecast to stick around through April before yielding once again to so-called neutral — not La Niña or El Niño — conditions, according to the Climate Prediction Center.
The strength of La Niña matters — the stronger it is the more of a “consistent” impact it can have on weather, according to Emily Becker, an atmospheric scientist at the University of Miami.
That's because storm systems, mostly in the winter, move slightly northward with a shift in the jet stream during La Nina years, bringing more rain and snow north, L'Heureux said. Even though a La Nina tends to be cooler, there will likely be a residual effect of the exiting El Nino on global temperatures, L’Heureux said.
In Texas, La Nina generally means drought. As the ground dries up with lack of rain during a La Nina year, it generates an abundance of heat. North Texas experienced that in the summer of 2023 as ...
But during La Nina, the trade winds intensify and cold water from the depths of the sea rises up, resulting in cooler than average ocean temperatures in the eastern Pacific. These cold ocean temperatures and changes in the atmosphere affect the position of the jet stream — a narrow band of fast moving air flowing from west to east around the ...
On Thursday, NOAA issued a La Niña watch, explaining that it could replace El Niño before the end of summer. This could have implications for the impending Atlantic hurricane season and beyond.
During La Niña, increased precipitation is diverted into the Pacific Northwest due to a more northerly storm track. [209] During La Niña events, the storm track shifts far enough northward to bring wetter than normal winter conditions (in the form of increased snowfall) to the Midwestern states, as well as hot and dry summers. [210]